1 files changed, 17 insertions, 23 deletions

diff --git a/libavfilter/af_channelsplit.c b/libavfilter/af_channelsplit.c
index 5b410fd87c..b3756e2be9 100644
--- a/libavfilter/af_channelsplit.c
+++ b/libavfilter/af_channelsplit.c
@@ -1,18 +1,18 @@
 /*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -42,17 +42,13 @@ typedef struct ChannelSplitContext {
 
 #define OFFSET(x) offsetof(ChannelSplitContext, x)
 #define A AV_OPT_FLAG_AUDIO_PARAM
-static const AVOption options[] = {
-    { "channel_layout", "Input channel layout.", OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, { .str = "stereo" }, .flags = A },
-    { NULL },
+#define F AV_OPT_FLAG_FILTERING_PARAM
+static const AVOption channelsplit_options[] = {
+    { "channel_layout", "Input channel layout.", OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, { .str = "stereo" }, .flags = A|F },
+    { NULL }
 };
 
-static const AVClass channelsplit_class = {
-    .class_name = "channelsplit filter",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
+AVFILTER_DEFINE_CLASS(channelsplit);
 
 static av_cold int init(AVFilterContext *ctx)
 {
@@ -121,6 +117,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
         buf_out->data[0] = buf_out->extended_data[0] = buf_out->extended_data[i];
         buf_out->channel_layout =
             av_channel_layout_extract_channel(buf->channel_layout, i);
+        av_frame_set_channels(buf_out, 1);
 
         ret = ff_filter_frame(ctx->outputs[i], buf_out);
         if (ret < 0)
@@ -132,24 +129,21 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
 
 static const AVFilterPad avfilter_af_channelsplit_inputs[] = {
     {
-        .name           = "default",
-        .type           = AVMEDIA_TYPE_AUDIO,
-        .filter_frame   = filter_frame,
+        .name         = "default",
+        .type         = AVMEDIA_TYPE_AUDIO,
+        .filter_frame = filter_frame,
     },
     { NULL }
 };
 
 AVFilter ff_af_channelsplit = {
     .name           = "channelsplit",
-    .description    = NULL_IF_CONFIG_SMALL("Split audio into per-channel streams"),
+    .description    = NULL_IF_CONFIG_SMALL("Split audio into per-channel streams."),
     .priv_size      = sizeof(ChannelSplitContext),
     .priv_class     = &channelsplit_class,
-
     .init           = init,
     .query_formats  = query_formats,
-
-    .inputs  = avfilter_af_channelsplit_inputs,
-    .outputs = NULL,
-
-    .flags   = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
+    .inputs         = avfilter_af_channelsplit_inputs,
+    .outputs        = NULL,
+    .flags          = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
 };